Machine for slitting sheet-metal strips.



F. C. AREY.

MACHINE FOR SLITHNG SHEET METAL STRIPS Patented Jan. 2, 1917.

APPLICATION FILED M'II. I4, 1915.

Zc/zji ems-s v ZEN/652 01 F. C. AREY.

MACHINE FUR SLITTING SHEET METAL STRIPS.

1,362. APPLICATJDN FILED APR. 14, 1915. Jan. 2,

8 SHEETS-SHEET 2.

31H 2 71 ass F .C.AREY. MACHINE FOR SLITTING SHEET METAL STRIPS. APPUCATION FILED APR. I4. 1915- Patented Jan. 2,1917.

0 lm'fenior I V I. :3

I M ii I- III, I :7;

lnzkn Zor d C- Pqtepted Jan. 2, 1917.

B SHEETSSHEET 4 APPLICATION FILED APR. I4. 1915- F. C. AHEY.

MACHINE FOR sunmu SHEET METAL smws.

APPLICATION FILED APR, 14, l9l5. 1,21 1,362. Patented Jan.2,1917.

B SHEETS-SHEET 5.

F. C. AREY.

MACHINE FOR SLITTING SHEET METAL STRIPS.

F. C. AREY.

MACHINE FDR sumrw SHEET METAL STRIPS.

APPLICATION HLESJ APR. I4, 1915.

1,21 1,362. Patented Jan. 2, 1917.

8 SHEETS--SHEET I.

F. C. AREY. MACHINE FOR SLITTING SHEET MTAL STRIPS. APPLICATION FILED APR. H. 1915.

Patentd Jan. 2, 1917.

8 SHEETSSHEET H- l vzzfnior FRED C. AREY, OF OAK PARK,

0 NORTHWESTERN EXPANDED METAL COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

MACHINE FOR SLITTING SHEET-METAL STRIPS.

Application filed April 14, 1915.

To all whom it may concern Be it known that l, Face (7. Aunr, a citizen of the United States, residing at Oak Park, county of ook, State of Illinois. have invented :1 certain new and use ful Improvement in Machines for Slittin Sheet-Metal Strips, and declare the following to be :1 full. clear, and exact dcscrip- (ion of the same, such as will enable others skilled in the art to which it pertains to make and use the same. reference being had to the accompalrving drawings. which form :1 part of this specification.

The present invention relates to machinery for acting upon sheet metal in the process of formin; expanded metal. such as expanded metal laths. and has for its ohjeet to produce a simple and ellicient ma chine for slitting a panel extending lengtlr wise of a long narrow strip and lying usu ally between two unslitted margins. and delivering the strip in a proper condition to be. received directly by other mechanism adapted to operate further upon it.

Viewed in its various aspects my invention may be regarded as comprising novel slitting rolls. as a novel feeding and guiding means for delivering a strip to the rolls. as a novel means for receiving a strip travcling, at an angle to the direction of its length and shifting it so as to bring it parallel to the direction in which it is travcling or simply as a machine for working upon a strip and delivering it in a convenient position.

The. various features of novelty whereby my invention is characterized will hereinafter be pointed out with particularity in the claims; but, for a full understanding: of my invention and of its objects and advantages. reference may be had to the-following detailed description taken in connection with the'aceompanying drawings, wherein:

Figure 1 is a top plan view of a portion of a machine arranged in accordance with my invention: Fig. 2 is :i top plan view of so much of the machine which with the parts shown in Fig. 1 makes a complete machino; Fig. 3 is a side elevation of the portion of the machine shown in Fig. 1 on a larger scale, parts of the receiving table being broken away; Fig. 4 is a longitudinal vertical section taken at right angles to the axes of the slitting'rolls and showing Specification of Letters Patent.

the same approximately 1 1s :1 section 7"? of Fig. 3

and its hearings removed portion of the machine as lug. 5 1s :1 ser-tlon taken hne fi fi of Fig. 4: Fig. (1

Patented Jan. 2, 191 '7.

Serial No. 21,198.

Fig. 3; approximately on is a section taken on line (i---G of Fig. 4; Fig. taken approximately on line with the upper slitting roller and with the top emoved: Fig. 8 is a side view scale for receiving the slitted sing it parallel with the di (h it i. traveling; Fig. 9 is :1 p n'oximately central section evielshown in Fig. 8; Fig. mih'llrg toward the left from l enll ol' Fig: 9: Fig. ll is a inmlr-lv on line ll-ll of Fig. :1 se tion approxinnltely on line l9-li of Fig. 8; Fig. 13 is .an axial section throng] and ad usting oi the strip feeding and amsm; Fig. H is :1 section 1 one of the driving sprockets means therefor forming part guiding mechw taken approxr mately on line 1-i--1, of Fig. 13; Fig. 15

is a section t l5-l5 of Fig.

approximately on line an enlarged scale; and

:1 ken Fig. 16 is a section taken approximately on Fig. '3 on an enlargediscale.

The machine illustrated in the dra'ivings is one designe o' :1 long 11:11 unslitted mare the unslitted 111 to the body of 'tion is expand d to slit; the central portion 'row strip of metal, leaving ins at the sides. whereby when argins are bent at right angles the strip and the slittcd pored into a diamond mesh, the

result is a metal lath unit which may be la id beside ot her units of the same kind and be permaiwntly fastened thereto at its flanges so as to produce a sheet comprising an expanded metal surface backed at inter 'vals by still 1' central portion of a strip while the side it is necessary to cut In order to permit the to be expanded remain unexpanded, the slits at a slight ibs.

margins angle tothe direction of length of thestrip instea d of pa rallel with the direction of length as in the old Curtis process. Furthermore. the slitted narrow where will by a. rotarv come close together,

panel is necessarily quite it is desired to have lath units. of such a width that the'reinforcing ribs and thereforethe cannot be employed. my invention, slitting employing long slitting rolls each having a co tting surf ace or arealimited to a nar-' enters a keywa in one of the rolls and one i cutting rings plane at right angles to the axis 0 the roll an angle equal to the angle at which the slits are to be cut in the strip. The strips are fed between these rolls at the same angle to a. plane at right angles to the aXes of the rolls as that of theband-like cutting zones on the rolls, being properly positione so as to cause the effective cutting band or belt to travel down the middle of the strip as the strip passes between the rolls. When the strip emerges from the slitting rolls it lies at an angle to the direction in which it is traveling and must therefore be straightened in order to bring it in a position to enter suitable expanding mechanism and therefore I have provided a receiving table so equipped that as each strip leaves the slitting rolls it is'positively shifted sons to make it lie parallel with the dilectimi in which it is traveling.

Reference being had to the drawings, 1 and 2 represent heavy cylindrical rolls each having at one end a stationary collar, 3, and at its other end a detachable collar, 4, in the form ofa large nut. The space between the two collars on each roll is filledwith disks or rather flat rings, 5, alternating the spaccrs, 6', of lthe same thickness as the disks or rings but of somewhatsmaller diameter. The disks may be of the ordinary well known Curtis type having radial grooves, 7, extending inwardly from the periphery in the sides thereof, the edges of the disks between the grooves being cutting edges and the grooves permitting the portions of a strip or sheet coming opposite them in the slitting operation to remain unslitted. In order to secure the helical slitting zone the or disks are mutilated, each having a section, 8, at its periphery, cut away and, beginning at either end of the roll, the disks are progressively oifset'relative to each-gither, the beginning of the mutilated portion of the cutting edge receding or advancing around the roll, depending upon which end is considered the s'tarting end. The result is that the unmutilatcd portions of each roll form a sharply ,definedhelical band extendingar'oundthe roll from end to As best shown in Fig. 4, the rings or disks are held against angular movement on the rolls by means of keys, 9, each of which of aseries of e ways, 10,in each of the rings or disks. T e keyways are distributed along the entire inner edge of each of the cutti rings so that each ring may take any desi angular position upon the. roll. The rolls are provided at their ends with suitable journals, 11 and 12; the journals for the upper roll extendin into suitable bearing oxes, 13, 13, Win e the journals for the lower roll extend into suitable journal boxes,

14 and 15. In the arrangement shown, the bearing boxes are mounted in suitable heavy pedestals, 16, supported at their lower ends \upon a heavy base, 17. Beneath the bearing boxes, 14 and 15, are connected wedges, 18,

between which and one of the pedestals is a screw device, 19, which may be turned to adjust the wedges in and out and thus raise and lower the bearing boxes 11 and 15 in order to secure accurate adjustment thereof. The rolls are removed by lifting them out through the top of the pedestals and, in order to make it unnecessary to lift the rolls to an undue height in this process, the portion, 20, of each of the pedestals just in front of the upper bearing boxes 13 is made separable, being preferably formed integral with the cap 21 which is hinged, as at 22, at the upper rear corners of the pedestals; this cap serving to tie the pedestals together, to hold the upper bearing boxes in place, and to lift out of the way the front upper halves of the pedestals when the cap is swung back.

The main driving shaft, 23, is mounted in and extends through the pedestals parallel with and behind the lower roll. On one end the driving shaft has a gear wheel, .21, meshing with a gear wheel, 25, on the journal 12 of the lower roll. On the opposite side of the machine there is on the driving shaft a gear wheel, 26, meshing with an intermediate gear wheel, 27, which in turn meshes with a gear wheel, 28, on the journal 12 of the upper roll; the gear wheels 26 and 27 being of the same size as the gear wheel 24; while thegear wheel 28 is the same size as the gear wheel 25, thus causing the two rolls to be driven in opposite directions and at the same speed when the driving shaft is set in mo tion.

In order that the slitting rolls may act properly on the strips it is necessary that the latter be fed to the rolls at the proper angle and in proper relation to the points at which the complementary cutters are in cut ting relation to each other. In other words, if the strip is to have its central lon itudinal panel slitted,'the strip must be del vered to the-rolls with its advance end meeting the rolls at one of the points where the cutting bands main contact with each other, and at an an le to a plane at right angles to the axis 0 the rolls equal to the angle which the band-like cuttin areas make with such plane. The wi'dt of the slitted panel in the strip is equal to the width of the slitting helices and, in order to bring this panel in a the advance and of is necessary to provide some means for automatieally delivering a strip in such a position that it will be properly acted upon by the slitting rolls. This I accomplish by means of a novel. feeding table.

In advance of the rolls is a table, 30, having its top surface in the horizontal plane of the line of contact between the rolls, the table having a width equal at least to the effective width of the rolls and having a length at least as great as the longe strip to be acted upon by the machine. Extending across the top of the table parallel with the axes of the rolls, and back underneath the table are a series of endless chains, 31 to 36 inclusive. ()n one side of the table these chains pass over suitable idle running sprocket wheels, 32', while at the other side they run over driven sprocket wheels, 38, mounted on a shaft, 39, extend ing lengthwise of the table and driven from the main driving shaft. In the arrangement Shown, the main driving shaft drives a countcnshaft, 40, by means of suitable Spiral gearing, 41; the counter-shaft drives a. second vertical counter-shaft, 42, by means of suitable spiral gearing including a spiral gear, 43; and the counter-shaft 42 drives the shaft 39 through suitable spiral gearing, 44-. The parts are so proportioned that the chains travel across the table at exactly the same speed as a point of contact between the two helical cutting areas travels in the direction of the length of the rolls as the rolls are rotated. On the chains are suitable guides or abutments against which the edge of a strip, 50, lying upon the table and adapted to be fed between the rolls is adapted to bear, these abutments or guides being so disposed that the strip will lie at the desired angle. Consequently, when the machine is in operation, the chains will hold the trailing end of the strip at the proper angle while it is passing through the machine and, by properly timing the chains, the guides or ahutments will serve to hold the strip in such a position that if it is simply slid along them and between the rolls, its advance end will be properly located with reference to the cutting areas and the slits will be placed in the proper location in the he top of the table is preferably grooved as indicated at 51 along the lines of the chains, thereby permitting the chains to lie below the upper surface of the table where they will not interfere with a strip resting on the table. The abutments or guides preferably take the form of rollers, 52, mounted to revolve on journals projecting upwardly from the chains when they are at points above the table. The rollers are preferably flanged as indicated at 53, so that when the edge of a strip is pressed against them, any tendency of the strip to rise will be over come and the strip will be held flat on the table. In order to locate the rollers accuratelyw ith respect to the top of the table, there is placed upon the trunnion beneath each of the rollers a guide plate, 54, which enters guideways, 5.3, at the sides of the corresponding groove or slot, 51, and holds each roller against up and down movement as long as it is traveling across the top of the table. On the chains 33 to 36 there are only single rollers while on the chains 31 and 32 there are double rollers that is, the rollers are arranged in pairs spaced apart a distance equal to the width of the strip to be operated upon. In this way the advance end of the strip is positively held against transverse movement relative to the chains, insuring that the strip will not slip but will always be delivered accurately to the rolls and, as it is fed through the rolls, is posi tively held at the predetermined proper angle. Each chain may of course have more than one roller or Set of rollers so that as soon as one strip has completed its passage through the slitting rolls there will be another strip ready to enter.

Since the chains must be accurately adjusted relative to each other and in definite time relation to the slitting rolls, I have provided means for permitting adjustments to be made quickly and conveniently. Instead of fixing the sprocket wheels 38 to the shaft 39, I employ the arrangement shown in Figs. 13 and 14 wherein the sprockets are made readily, adjustable on the shaft. Ileferring to these figures, 60 represents a collar fixed upon the shaft 39 beside one of the sprocket wheels 38, this sprocket wheel having on one-side a hub provided with a worm wheel, 6].. Extending around the hub and worm wheel is a housing, 62, provided with a sleeve or hub portion, 63, which is fixed to the shaft. Extending transversely through the housing is a worm, 64, meshing with the worm wheel 61. The worm and worm wheel serve to lock the sprocket wheel to the shaft but, in. order to adjust the sprocket wheel on the shaft, it is only necessary to turn the worm in the proper direction. The driving sprockets for all of the several chains are alike so that eachchain may be easily adjusted. However, after all of the chains have been adjusted individually so as to bring them into the proper relation one to the other, it is necessary to provide for adjusting all of the chains collectively so as to time them properly relative to the slitting rolls. This collective adjustment can convenicntly be accomplished by permitting the shaft 39 to be turned independently of the rolls. In th arrangement shown, I have provided somewhat the same adjustment between one of the driving gears for the shaft 39 and its shaft as that employed between the sprocket wheels 38 and the shaft 39.

' on the shaft 40 and, keyed upon this shaft beside the spiral wheel is worm wheel, 65, with which meshes a worm, (36, mounted in suitable bearings, 67, on the sideof the wheel 43. The worm and worm wheel lock the wheels 43 and 65, and theretore the wheel 43 and shaft 40, together; but, by turning the worm 66, the wheel 43 and all of the parts driven thereby, including the shaft 39, are moved independently of the shaft 40. It will thus be seen that the individual chains are adjusted until a line drawn tangent to the rollers thereon makes the desired angle relative to the longitudinal axis of the machine. A strip is then placed in position with its advance end extending intorproximity to the rolls, and the chains are adjust ed collectively so as to bring the end of the strip into proper relation to the cutting helicos; the parts being so arranged that just as the guide rollers on the chain 31 pass up to the top of the table and are in position to receive a strip, the slitting rollers are likewise in a position to receive and act upon a strip entering between them at the eorre spondin end.

It wil be seen that the guide rollers come to the top of the table in the reverse order of their distance from the slitting rolls so that long before the guide rollers on the chains 31 and 32 are in position to receive a strip, some of the other guide rollers will already have assumed their place on top oi? the table and therefore the workman is able to lay a strip on the table and line it up nicely against two or more rollers before the rollers on the chain 32 come into the receiving position, and consequently he can slip the advance and of the strip between the rollers on the chain 32 without loss of time when these rollers reach the receiving position. The same holds true with respect to the rollers on the chain 31, the strip being however guided from both sides by the rollers on the chain 32 at the time the advance end is slipped between the rollers on the chain 31. A further push upon the strip causes its advance end to be introduced between the slitting rolls which, cutting slits arranged at right angles to the axes of the rolls form in the strip a central panel of slits, 68 (as best seen in Fig. 7) lying at the same angle to the longitudinal axis of the strip as the angle which the strip makes with a plane at right angles tothe axes of the slitting rolls. tinue to revolve, the strip is fed forward at right angles to the axes of the rolls, the rolls themselves acting as feeding devices, but because of the angular position of the strip,

the line of contact between the strip and the rolls travels gradually from one end toward of contact behelical cutting areas as they the other, following the line tween the two As the slitting rolls con roll upon each other from the point where the strip first entered between them. As the strip emerges from between the slitting roll;

it lies at the same angle at which it lay upon the feed table and, in order that it may properly enter a machine for further acting upon it, it is necessary that its position be shifted so as to bring its longitudinal axis parallel with the direction of travel. In the arrangement shown, a table, 70, in rear of the slitting rolls, this table having projecting through the top thereof a series of rollers, 71, suitably driven at the proper speed to carry the strip forward as fast as it is delivered from the slitting rolls. The rollers 71 may conveniently be driven from the coi'lnter-shatt 40 by means of another counter-shaft, 772, geared to the countershaft 40 by suitable gearing, 73, and in turn geared to the rollers 71 by suitable spiral gearing, 74. Above one of the rollers 71 at some distance from the slitting rolls there may be a codperating roller, 75, between which and the roller 71 the strip will be gripped and positively fed. Upon the table, beyond the series of rollers 71 is what may be termed a tunnel, 80, having a widened mouth, 81, at the advance end and the interior contour of a warped surface,

- this contour being that which the buckling strip will take when it is grasped at one end and pressure applied to swing it over parallel with its direction of movement. In the arrangement shown. the tunnel consists of side walls, 82 and 5 5?, and top and bottom walls, 8% and 85. The meati tunnel is of a height equal to the in: walls and of a width equ: more than half the width of its opposite end the width of the tunnel 15 approximately equal to the width of a strip and of not much greater height. this portion of the tunnel lying adiacent to and parallel with the side of the table nearest which the advance end of the strip lies when it passes through the slitting rolls. At a short distance within the mouth of the tunnel it contracts sharply in depth, the too falling and the bottom rising although both the top and the bottom are higher at their inner edges than at their outer edges. Between what may be termed the entrance to the contracted portion of the tunnel, indicated at 86, and the outlet end of the tunnel indicated at 87. the tunnel rises in a gradual curve as indicated at 88 and then sweeps down in a reverse curve to the outlet end. A strip being fed forward on the table enters the flaring mouth of the tunnel and naturally follows the contour of the tunnel as it is pushed forward and swun laterally and finally emerges lying paralle with the longitudinal axis of the machine. Where the machine herein illustrated is placed directly in advance of an expanding machine,

I have arranged 76 of the side to the dircction of t the advance end of the strip leaving the straightening tunnel will be grasped by the expanding inei'rhanism so that the rear end of the strip will be drawn through the tunnel. However, any suitable means may he provided for carrying the rear end of the strip through the tunnel; the strip may be drawn through by hand or suitable feed rolls may be placed just beyond the tunnel.

WVhile I have illustrated and described with particularity only a single preferred form of my invention, I do not desire to be limited to the exact structural details thus illustrated and described; but intend to cover all forms and arrangements which come Within the terms employed in the definitions of my invention constituting the appended claims.

I claim: i

1. Ina machine of the character described, rolls having helical complementary cutting zones containing cutting edges lying in planes atright angles to the aXeS of the rolls, and means for feeding a strip to be operated upon between the rolls at an angle to the planes of the said. cutting edges.

2. In a machine of the character described, rolls having helical complementary cutting zones containing cutting edges lying in planes at right angles to the axes of the rolls means for feeding a strip to be operate upon between the rolls at an angle to the planes of the said cutting edges, and means for receiving the strip tom the rolls and shifting it so as to bring it parallel with the direction in which it travels.

3. In a machine of the character described, strip-working mechanism, means for feeding a strip to said mechanism at an acute angle to the direction of length of the strip, and means for receiving said mechanism and shifting it so as to bring it parallel with the direction of movement thereof.

t. In a machine of the character described, stripwvorking mechanism adapted to act on a strip passing through the same at an. acute angle to the direction of the length of the strip, and means in advance of said mechanism for guiding the trailing end of a strip in said mechanism. so as to maintain it at said angle to the direction of feed.

5. In a machine of the character described, strip-Working mechanism adapted to act on a strip passing throu h the same at an angle e length of the strip, means in advance of said mechanism for guiding the trailing end of a strip in said mechanism so as to maintain it at said angle to the direction of travel, and means for re! ceiving said strip from said mechanism and shifting it so as to bring it parallel with the direction of travel.

6. Ina machine of the character described, strip-working mechanism adapted to act on strip from said helical band-like cutting a strip passing through the same at an acute angle to the direction of its length, a feed table in advance of said mechanism, and means on said table and movable across the same in engagement with a strip, passing through said mechanism so as to maintain the trailing end of thesflrip at the aforesaid angle.

7 In a machine of the character described, strip-working mechanism adapted to act on a strip passing through the same at an acute angle to the direction of its length, a guide in advance of said mechanism for engaging with an edge of a strip passing through said mechanism, and means for moving said guide transversely of the direction of forward travel of the strip at a rate suflicient to keep the guide in contact with the strip and hold the latter at the aforesaid angle.

8. In a machine of the character described, cooperating rotary rolls each comprising a series of spaced 'co-axial disks fittin between and slightly overla ping the dis s of the other series, the d'isks being complementary interrupted cutting ed es adapted to cut rows of spaced short sits in a strip passing therethrough, and the disks being mutilated so as to confine the cutting zones to helical bands extendin around the rolls.

9. In a machine of thee aracter described, cotiperating rotary rolls each comprisin a. series of spaced co-axizil disks fittin ictween and slightly overlapping the dis s of the other series, the disks being complementary interrupted cutting edges adapted to cut rows of spaced short slitsin a strip passing therethrough, the disks being mutilated so as to confine the cutting zones to helical bands extending around the rolls, and means for feeding between the rolls a strip lying at an angle to the axes of the rolls corresponding to the angle of said bands.

10. In a machine of the character described, cooperating rotary rolls each comprising a series of spaced coaxial disks fittin between and slightly overlapping the dis is of the other series, plementary interrupted cutting edges adapt? ed to cut rows of spaced short slits in a strip passing therethrough, the disks being mutilated so as to confine the cutting zones to helical bands extendin around the rolls, and transversely-movabfia guidin means for guiding a long narrow strip to operated upon between the rolls at a. point where the complementary cutting edges are in cutting relation to each other and maintaining the trailing end of the strip at the proper angle to maintain the cutters in cutting relation to thf:l strip as the strip passes through the re s.

11. In a machine of the character described, rotary rolls having complementary zones extending around the same and containing cutting cothe disks being como eratin edges lying in planes at right ang es to t e axes of the rolls, a guide in advance of the rolls, and means for movin the guide in the direction of the length 0 the rolls at the same speed that the line of com, tact between said zones travels lengthwise of l the rolls.

12. In a machine of the character described, rotary rolls having complementary helical band-like cutting zones extending around the same and containing cutting cooperating edgeslying in planes at right angles to the axes of the rolls, a guide in ad- Vance of the rolls, said guide having a guiding face lying at the same angle to a plane at right angles to the axes of the rolls as the angle which said cutting zones make with said plane, and means for moving the guide in the direction of the length of the rolls at the same speed that the line of contact between said zones travels lengthwise of the rolls.

13. In a machine of the character described, rotary rolls having complementary helical band-like cutting zones extending around the same and containing cooperating cutting edges lying in planes at right angles to the axes of said rolls, a guide in advance of said rolls, driving mechanism including a gearing between said rolls and said guide for causing the guide to move transversely of said planes when the rolls are rotated.

14. In a machine of the character described, rotar rolls having complementary helical bandike cutting zones extending around the same and containing cooperating cutting edges lying in planes at right angles to the axes of said rolls, a guide in advance of said rolls, driving mechanism including a gearing between said rolls and said guide for causing the guide to move transversely 0 said planes when the rolls are rotated said gearin including means for shifting the guide adjust the same without rotation of the rolls.

15. In a machine of the character described, strip-working mechanism adapted to act on a strip passing through the same at an angle to the direction of its length, a feed table in advance of said mechanism, endless belts extending across said table at intervals, devices on said belts for engaging 1 with the edge of a strip, and means for operating said mechanism and said chains in unison with each other.

16. In a machine of the character de' scribed, strip-working mechanism adapted to act on a strip passing through the same at anangle to the direction of its length, a feed table in advance of said mechanism, endlessbelts extending across said table at intervals, devices on said belts for engaging with the edge of a strip, means for operating said mechanism and with each other, and means for shifting said said chains in unison belts independently of each other to adjust said devices so as to bring the strip at the desired angle. 7

17. In a machine of the character described, strip-working mechanism adapted to act on a strip passing through the same at an angle to the direction of its length, a feed table in advance of said mechanism, endless belts extending across said table at intervals, devices on said belts for engagingwith the edge of a strip, means for operating said mechanism and said chains in unison with each other, and means for shifting said belts collectively with respect to said mechanism to vary the time relation between said devices on the belts and said mechanism;

18. In a machine of the character de- I scribed, strip-working mechanism adapted to act on a strip passing through the same at an angle to the direction of its length, a feed table in advance of said; mechanism,

endlessbelts extending across said table at intervals, devices on said belts for engaging with the edge of a stri means for 'operating said mechanism an said chains in umson with each other, means for shifting-said belts independently of each other to adjust said devices so as to bring the strip at the desired angle, belts collectively with respect to said mechanism to vary the time relation between said devices on the belts nism. i

19. In a machine of the character de-' scribd, strip-working mechanism adapted to act.0n a stri passing through the same at an angle tot e direction of its length, a feed table in advance of said mechanism, said table having a series 0 transverse grooves in the top thereof, endless belts extending across the table through said grooves, projections on said chains adapted to extend above said grooves and engage with-an. edge of a strip on the table and means for drivin said mechanism d said belts in unison w th each other.

20. In a machine of the character described, strip-working mechanism adapted to act on a strip passing through the same at an angle to the feed table in advance oisaid mechanism, said table having i a series of transverse grooves in the top thereof, endless belts extending across the table through said rooves, projectlons on said chains adapte to extend above said grooves and enga with an edge of a strip on the table, said projections being grouped in pairs spaced apart a distance equal to the width q said strip on the belts near the said mechanism and being arran ed singly on the other belts, and means for riving said mechanism and said {belts in unison with each other.

21. In a machine of the character de scribed, strip-working mechanism, a. feed and said mechadirection of its length, a

table in advance of said mechanism, a shaft arranged along one side of said table, wheels distributed along the shaft, means for moving the Wheels indivlduallyangularly upon in unison with each other.

In a machine of mechanism,

arranged along distributed wheels and extending across the table, stripengaging devices on said belts, means for operating said'mechanism and said shaft in unison with each other, and means for turning said shaft independently of said mechathe character do ing mutilated so as to confine portions to a helical band extending around the roll.

. FRED C. AREY. 

